Preparation method of collagen membrane

The invention provides a collagen drying and film forming method. The collagen drying and film forming method comprises the following steps of material preparation, dilution, defoaming, coating, material pressing, drying, thermal crosslinking, water covering and freeze drying. According to the collagen drying and film forming method provided by the invention, the integrity of three strands of helixes of the collagen can be kept, the drying efficiency and the product yield are improved, and the dried collagen film has good mechanical properties and good smoothness. 本发明提供一种胶原蛋白干燥成膜方法，包括以下步骤：备料步骤、稀释步骤、脱泡步骤、涂布步骤、压料步骤、干燥步骤、热交联步骤、覆水步骤、以及冷冻干燥步骤。本发明提供的胶原蛋白干燥成膜方法能在保留胶原蛋白三股螺旋的完整性的同时，提高干燥效率及产品良率，且干燥后的胶原蛋白膜具备良好机械性质及良好的平整性。